2/17/06 - Leo Grady

The Graph Analysis Toolbox must be installed in order to use this code.  
This toolbox may be obtained freely at:
http://eslab.bu.edu/software/graphanalysis/

Extra comments:
Figure 1 requires the MEXed version of Jonathan Shewchuk's triangle.c.
The C code is available at:
http://www.cs.cmu.edu/~jrs/

Figure 5 was obtained by applying the isoperimetric algorithm, as given
by imgsegment.m (in the Graph Analysis Toolbox) to these images, 
which are available online at:
http://eslab.bu.edu/resources/imageDB/imageDB.php